Cut-off mechanism for sheet material.



S. M LANGSTGN. GULGFF memmsm Fox SHEET MATERIAL.

APPLICAYION H'LED SEPT. 13. 1915. 1 ,176.,574. Patented Mar. 21, 1916.

2 $HEETSSHEET l- S- M. LANGSTON.

CULOFF MECHANSM FOR SHEET MATERIAL.

ArPucAnoN fun) SEPT. 13. 1915.

1 76,574. Patented-Mar. 21, 1916.

2 SHEETS-SHEET 2.

PATENT FFICE.

"131 0 W'ENONAH, NEW JERSEY "JBLAHIQM FQR SHEET MATERIAL.

17 ii Us r 2c. cal cult sf such rolil a exreeat W'ltllOlli? necessary the The ' ms h-mgth thc final prod lss ismica-lly "188i apprcxi Firth of thc final such width. if the width, {Or in- 'iall'i the irom the i. must it intc thiviss to 0pc rich 7 cutting. the same grissihlv to fill ctirms hi: t al cuti 1.

ificaticn cfi Letters Yatent.

.llc f. septemhcr 13, 1915.

.4; is a. side elevation of the Patented Mar. 21,1916.

Serial m. 50,338.

from any othr strip. To secure this ohjsct, ll arrange a plurality of independently gavsrnahlc cut-oil mechanisms and ale-sign them, or at least all except the last (me, so that only one strip or thc'desired hum her of strips will be cut oil as the cntirs sheet passes thsrethrough.

In the accumpanying drawings I have. illustrated two diilcrent forms which my invention may assume, but it Will be evident that other forms may be designed Within thc spirit at my invention and Without dcparting from the scope of the appended claims.

In th drawings, to which reference is is be h. -11 will in which similar refercncs characters indicate ccrresponding parts in the scvcral views, Figure 1. is a. top plan view 0f one machine embodying my invertticn; Fi is a side elevation; Fig. 3 a. top plan View of a ssccnd form; and. Fig. form shmvn in Fig. 3.

111 the. form. illustrated in Figs. 1 and 2., I have shown a delivery mechanism 1% which may be either a part of the. machine for making the douhle-faced corrugated paper, or a mechanism receiving the paper from the machine and delivering it to the Crl't Ofi mechanism. The delivery mechunism is illustrated as including two belts having sumrposcd parallelruns for engaging with apposite sides of the sheet A- and advancing the latter.

Beyond the delivery mechanism I mount suitable slitting mechanism for sub-dividing the sheet into a plurality of separate strips. This slitting mechanism may he of": any suit-- able. character, such, for lnSi"ll="@, 1w; roi-ary overlapped cutters 11 and i2 Quil on parallel shafts. The cutters may he adjust.- .':l lengthwise cf the shafts to vary the I':l1- live. widths ofthc strips and any desired number of cutters may be. employed. forsuw dividing the. sheet into a large number of strips.

Merely for purposes of illustration, l. have shown a single pair of slitters sub dividing the sheet into strips --B anti G- and have illustrated said slitters as hcing driven by a pair of intermeshing pinions, one of which meshes with a. gear as the shaft of one of thc drums 0f the dc livery mechanism. 1 dc not desire lb or. limited to any particular kind 0i slitting desired character.

ing; a ationary knife 14 and a movable knife 1;. for coacting therewith to perform the cutting operation. Each blade extends the full width of the sheet so that the sheet may he cut all the way across by either cutoff mechanism. Each stationary knife is comparetivcly narrow and its base is provided with a, slot extending the entire Width of the sheet so that the entire sheet may pass through the slot beneath the stationary knife and pass the cutoff mechanism umiflected by the latter, if desired.

The movable knives 15 may be operated in any suitable manner and may be of any referably they are carried by shafts 16 and are mounted to rotate so as to coact with the stationary cut-v tcr once during each revolution. The driving mechanism is such that the speed and movement of each movable knife may be varied in'respect to the speed of the other knife or in; es and in respect to the rate of delivery of the sheet from the mechanism 10.

I have 'llustrated two cut-oi mechanisms,

' each driicn by a. belt 17 which receives its power from the delivery mechanism or from some source of power connectedfto the latter so that the speed of the cutters may be directly dependent upon the speed of delivery of the material. The mechanism for transrnitting power to each rotary cutter includes some form of speed varying device which may be of any well-known character. I have illustrated rather conventionally one form of such mechanism which includes a friction disk 18 and a friction wheel 19 adjustable along the face of the disk toward and from the center to vary the speed of the driving belt 17. This form of mechanism will operate to rotate the cutters continuously, but permit the speed of either cutter to be varied in respect to-the other and the speed of both to be varied in respect to the rate of delivery of the material. In actual practice, I prefer to use a cutter controlling mechanism which ermits the movable cutter toremain stationary until the controlling mechanism comes into play to give the cutter a single revolution. The controlling mechanisms of the different cutters may be adjusted to operate them at different frequencies and may include trip mechanism operated by the material itself. Such a mechanism is illustrated in mv copending application Serial No. 58,174, filed October nit ems :27, 1915, but forms no portion of my pres ent invention and therefore has not been here illustrated.

In operation the sheet A- it leaves the feeding mechanism slitted into sepa rate strips the Width of at least one of which is regulated. in accordance with the width of the final product, and the two or more separate strins are delivered in approximately the same plane to the first cut-oil mechanism. One or more of the strips passes over the stationary knife 1 so as to be operated upon by the movable knife 15, while the other or others are deflected slightly so as to pass through the slot in the stationary knife 14. As illustrated, the strip C-- passes beneath the stationary knife while the strip -B-- passes thereover. The separate sections of the strip ---B-, if they are comparatively short, may be received by any suitable mechanism be tween the two cut-oil mechanisms and conveyed laterally or stacked up, or merely permitted to fall to the floor. If the sections are longer than the distance between the cut-oil mechanisms, the sections of the strip --l3-- may pass through the slot beneath the stationary knife 14 of mechanism, as illustrated.

It will noted that the strip -C- passes directly through the first cut-off mechanism without being subdivided and-is deflected upward slightly so as to pass over the stationary knife of the second cutoff mechanism. 1

By proper regulation of the machine, the separate strips may he made of different widths in accordance with the dimensions of different desired products and each strip may be sub-divided into sections, the length of the sections of one strip being independent of those of the other.

In Figs. 3 and 4, I have illustrated a slightly modified form of cut-oil mechanism whereby the sameresults may he so cured. in this form, the stationary knives 14, instead of having slotted supporting portions through which the material may pass, are adjustable endwisc so as to he capable of assuming positions beneath only a portion of themvidth of the sheet. Each stationary knife 14 is illustrated as having a supporting portion 20 mounted in adovetailed groove in the base 13*. The movable knives 15 extend the full width of the sheet and the stationary knives are each of a length equal to the total width of the sheet. With two cutoff mechanisms in operation, one stationary knife li may be moved out endwise so that it lies beneath one strip of the sheet and terminates at the slit between the strips while the other stationar knife extends out endwise in the opposite direction also terminates at the slit. In some machines, I might arrange the movable the second cut-cit support for the 1,4. vamge im side thereof 1;; any (if mid strips to any mm, frmn the piwum 0f delivvahv gby only ifQl'EzliZA at said @trips may 215031 by mid mtary matter.

a CZUYEIEQI} in he cuunty of Cam- 7 mm en New ,hzirey this Tb day of 20 jmamfimj", 3. Ha i915 plum but 021 the npposi t'ze side- Oi mentwuod mmuuvr from said miary mm;

U. A. machine of the rings describe finding means for deliwz'ing .i i 111mm the 05190 durable faced (imruguwd papa, a, slitting nwchan for subdivuiin aid sheet. hmgflnvzse and :1 cuhefl me ha/111,11 nchid ring :1 trazwversml y extanding z-ubn'y with :a I r: Uwmsversvly extemiing nae-111M! g9 Mating ilmwwviih, said mQREM- 1 pnratimiy nan'mv and perm 155130 of unv 0; mam f 

